The Mozilla/Netscape-Adobe Reader/Acrobat plug-in that allows PDF files to be opened within the browser window has a known problem that affects only files greater than 10 Mbytes. The PDF file will not open in the browser window, and you will get an Adobe error message that says “the file is damaged and could not be repaired” (which is not true).

There are 2 ways to get around this problem:
1) download the file with Internet Explorer (which uses a different plug-in that does not have this problem); or
2) change your Mozilla/Netscape browser configuration settings to open PDF files with the standard version Adobe Reader or Adobe Acrobat—not the plug-in. This will download and open PDF files outside the browser. In Mozilla 2.0, go to “Tools” > “Options” > “File Types – Manage” [select PDF] > “Change Action” and choose either “Open them with the default application” or “Open them with this application” (and choose Acrobat or Reader)—do not choose the “Use this Plug-in” option.